CN207161694U - A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system - Google Patents
A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system Download PDFInfo
- Publication number
- CN207161694U CN207161694U CN201721225490.0U CN201721225490U CN207161694U CN 207161694 U CN207161694 U CN 207161694U CN 201721225490 U CN201721225490 U CN 201721225490U CN 207161694 U CN207161694 U CN 207161694U
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- gearbox
- conduit
- gear
- separately positioned
- junction
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Abstract
This application discloses a kind of speed changing box lubricating system, including the first conduit (1), the second conduit (2), first conduit (1), one end of the second conduit (2) are separately positioned on the first gearbox (3) being connected with main shaft (5), first conduit (1), the other end of the second conduit (2) are separately positioned on the second gearbox (4) being connected with power source, and first gearbox (3) is engaged with second gearbox (4) by gear.The utility model also provides gearbox, the helicopter using above-mentioned lubricating system.Lubricating arrangement of the present utility model, by setting the first conduit, the second conduit, lubricating oil in two gearboxes is circulated so that the lubrication in whole gearbox is more abundant；Transmission internal pressure can be balanced simultaneously, mitigates the pressure to sealing component of gear casing and seam crossing, reduces the risk of gearbox oil leak.
Description
Technical field
The application is related to Helicopter Technology field, more particularly to a kind of gearbox lubrication system applied to helicopter field
System, and gearbox, helicopter using the lubricating system.
Background technology
UAV referred to as " helicopter ", is manipulated using radio robot and the presetting apparatus provided for oneself
Not manned aircraft.Compared with manned aircraft, helicopter has small volume, low cost, easy to use, etc. low to environmental requirement excellent
Point, it is widely used in taking photo by plane, agricultural, plant protection, miniature self-timer, express transportation, disaster relief, observation wild animal, monitoring infect
The fields such as disease, mapping, news report, electric inspection process, the disaster relief.
One of the core component of the gearbox of helicopter as helicopter, it is the connection between power unit and execution unit
Part, play a part of passing power, change rotating speed.The gearbox of helicopter using lubricating oil in use, it is necessary to be carried out
How lubrication, make the whole gearbox of oil lubrication, ensure the normal operation of gearbox, be that those skilled in the art are urgently to be resolved hurrily
The problem of.
Utility model content
In order to solve the above technical problems, first purpose of the present utility model is a kind of speed changing box lubricating system of offer；This
Second purpose of utility model is a kind of gearbox using above-mentioned lubricating system of offer；3rd purpose of the present utility model
To provide a kind of helicopter using above-mentioned gearbox.Lubricating arrangement of the present utility model, by setting the first conduit, second to lead
Pipe, is circulated to lubricating oil in two gearboxes so that the lubrication in whole gearbox is more abundant；Change can be balanced simultaneously
Fast case internal pressure, mitigate the pressure to sealing component of gear casing and seam crossing, reduce the risk of gearbox oil leak.
The technical scheme that the utility model is provided is as follows：
A kind of speed changing box lubricating system, including the first conduit, the second conduit, first conduit, one end of the second conduit
Be separately positioned on the first gearbox being connected with main shaft, first conduit, the other end of the second conduit be separately positioned on
On the second connected gearbox of power source, first gearbox is engaged with second gearbox by gear.
Preferably, first conduit, one end of the second conduit are separately positioned on the top of first gearbox, described
First conduit, the other end of the second conduit are separately positioned on the both sides of second gearbox.
Preferably, first gearbox specifically includes the transition gear axle being arranged in the first gearbox, transition gear
Axle one end is fixedly connected with bevel gear, and the bevel gear is meshed with second gearbox；The transition gear axle it is another
End is engaged respectively with upper fluted disc, tooth sector, and the tooth sector engages with lower tooth disk, upper fluted disc, lower tooth disk and the main shaft
It is fixedly connected.
Preferably, junction, second conduit and the described first change of first conduit and first gearbox
The junction of fast case is separately positioned on first gear box above the upper fluted disc.
Preferably, the casing of first gearbox 1 includes upper box and lower box, the upper box and the lower box
Dismountable connection, junction, second conduit and first speed change of first conduit and first gearbox
The junction of case is separately positioned on the upper box of shown first gearbox.
Preferably, second gearbox specifically includes the wheel for inputting being connected with power source, the wheel for inputting and input tooth
Wheel shaft is fixedly connected, and the input gear axle engages with output gear shaft, and input umbrella tooth is fixedly connected with the output gear shaft
Wheel, the input bevel gear engage with the bevel gear of the first gearbox.
Preferably, the junction of first conduit and second gearbox be arranged on the input gear axle with it is described
On the side box body of the second gearbox one of output gear shaft engagement place, the connection of second conduit and second gearbox
Place is arranged on another side box body of the second gearbox of the input gear axle and the output gear shaft engagement place.
Preferably, first gearbox is fixedly connected with second gearbox.
A kind of gearbox, including above-mentioned speed changing box lubricating system.
A kind of helicopter, including above-mentioned gearbox.
Split type speed-changing case, including two the first gearbox, the second gearbox gearboxes, when sharing the first gearbox,
It is double reduction during two gearboxes；According to actual conditions, also primary speed-down only can be carried out with the first gearbox, realized to going straight up to
The quick variable adjustment of owner's rotating speed, to adapt to different working conditions with requiring.To realize to the fast of Helicopter Main rotating speed
Velocity modulation section, utility model people has used Split type speed-changing case, but Split type speed-changing case is led in use, due to the effect of pressure
Gearbox oil leak is caused, reduces the service life of helicopter.
Split type speed-changing case, the first gearbox are engaged with the second gearbox by gear, and power is inputted by the second gearbox,
First gearbox is transferred to by gear, then helicopter main shaft is transferred to by the first gearbox, realize to the speed change of power with
Transmit.In real-world operation, lubricating oil is penetrated into the second gearbox by parts such as gears in the first gearbox, and due to power
It is passed to by the second gearbox, pressure is larger in the second gearbox, and lubricating oil is accumulated in the second gearbox, and due to the work of pressure
With seal and casing gap to the second gearbox produce pressure, cause the phenomenon that oil leak easily occurs in the second gearbox.
Utility model people carefully studies the oil leakage phenomenon of Split type speed-changing case, and the problem of finding oil leak, cause was in the first speed change
Lubricating oil can be penetrated into the second gearbox in case, and produces oil leakage phenomenon under the effect of the pressure.Gearbox of the present utility model
Lubricating system, the lubrication especially suitable for Split type speed-changing case.By setting two conduits so that the second gearbox not only acts as
Change the effect of speed reducing ratio, while also there is the function of gear pump, it can be by the conduit (such as the first conduit) of side, from the
Lubricating oil is extracted in one gearbox, then is back to by the conduit (such as the second conduit) of opposite side in big gearbox, forms closed loop
Lubricating system so that lubricating oil flows through the first gearbox, the every nook and cranny of the second gearbox, and lubrication is more abundant, subtracts simultaneously
The accumulation of pressure and lubricating oil in light second gearbox, using the pressure of the second gearbox, first is led back to by lubricating oil in time
In gearbox, the effect of lubrication can be realized, and can prevents the generation of Leakage.
Meanwhile the gear rotational speed in the second gearbox of gear speed ratio first in gearbox is higher, space is smaller, thus
The pressure in the gearbox of pressure ratio first in second gearbox is big, and conduit can reduce the pressure in the second gearbox, reduces pressure
Difference, the first gearbox of balance, the pressure in the second gearbox, reduces the pressure in the second gearbox to seal and destruction, keeps away
Exempt from oil leakage phenomenon.
The utility model also provides gearbox, the helicopter using above-mentioned lubricating system.
Existing transmission internal component lubrication is not in place, or the more scabrous defect of Leakage, the utility model be present
By setting the first conduit, the second conduit in the first upper part of gear box and the second gearbox both sides, by defeated in the second gearbox
Enter gear shaft, the gear pump that output gear shaft is formed, lubricating oil in two gearboxes is circulated so that in whole gearbox
Lubrication it is more abundant.The first conduit, the second conduit of the utility model setting simultaneously, can balance transmission internal pressure,
Mitigate the pressure to sealing component of gear casing and seam crossing, reduce the risk of gearbox oil leak.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of speed changing box lubricating system in the utility model embodiment；
Fig. 2 is the diagrammatic cross-section of speed changing box lubricating system in the utility model embodiment；
Fig. 3 is the schematic front view of speed changing box lubricating system in the utility model embodiment；
Reference：The conduits of 1- first；The conduits of 2- second；The gearboxes of 3- first；301- transition gear axles；302- umbrella tooths
Wheel；The upper fluted discs of 303-；304- lower tooth disks；The gearboxes of 4- second；401- wheel for inputting；402- input gear axles；403- output gears
Axle；404- input bevel gears；5- main shafts.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
Please as shown in Figure 1 to Figure 3, the utility model embodiment provides a kind of speed changing box lubricating system, including the first conduit
1st, the second conduit 2, first conduit 1, one end of the second conduit 2 are separately positioned on the first gearbox 3 being connected with main shaft 5
On, first conduit 1, the other end of the second conduit 2 are separately positioned on the second gearbox 4 being connected with power source, described
First gearbox 3 is engaged with second gearbox 4 by gear.
Split type speed-changing case, including 4 two the first gearbox 3, the second gearbox gearboxes, when share the first gearbox 3,
It is double reduction during the second gearbox 4；According to actual conditions, also primary speed-down, realization pair only can be carried out with the first gearbox 3
The quick variable adjustment of the rotating speed of helicopter main shaft 5, to adapt to different working conditions with requiring.To realize to 5 turns of helicopter main shaft
The quick regulation of speed, utility model people have used Split type speed-changing case, but Split type speed-changing case is in use, work due to pressure
With causing gearbox oil leak, reduce the service life of helicopter.
Split type speed-changing case, the first gearbox 3 are engaged with the second gearbox 4 by gear, and power is by the second gearbox 4
Input, the first gearbox 3 is transferred to by gear, then is transferred to helicopter main shaft 5 by the first gearbox 3, is realized to power
Speed change and transmission.In real-world operation, lubricating oil is penetrated into the second gearbox 4 by parts such as gears in the first gearbox 3,
And because power is passed to by the second gearbox 4, pressure is larger in the second gearbox 4, lubricating oil is accumulated in the second gearbox 4,
And due to the effect of pressure, seal and casing gap to the second gearbox 4 produce pressure, cause in the second gearbox 4 easily
The phenomenon of oil leak occurs.
Utility model people carefully studies the oil leakage phenomenon of Split type speed-changing case 4, the problem of finding oil leak cause become first
Lubricating oil can be penetrated into the second gearbox 4 in fast case 3, and produces oil leakage phenomenon under the effect of the pressure.Change of the present utility model
Fast case lubricating system, the lubrication especially suitable for Split type speed-changing case.By setting two conduits so that the second gearbox 4 is not
Only play a part of changing speed reducing ratio, while also there is the function of gear pump, it can pass through conduit (such as the first conduit of side
1) lubricating oil, is extracted out of first gearbox 3, then is back to by the conduit (such as the second conduit 2) of opposite side in big gearbox,
Form the lubricating system of closed loop so that lubricating oil flows through the first gearbox 3, the every nook and cranny of the second gearbox 4, and lubrication is more filled
Point, while mitigate the accumulation of the pressure and lubricating oil in the second gearbox 4, using the pressure of the second gearbox 4, by lubricating oil and
When lead back in the first gearbox 3, the effect of lubrication can be realized, and can prevents the generation of Leakage.
Meanwhile the gear rotational speed in second the first gearbox of gear speed ratio 3 in gearbox 4 is higher, space is smaller, because
And the pressure in the first gearbox of pressure ratio 3 in the second gearbox 4 is big, conduit can reduce the pressure in the second gearbox 4, subtract
Small pressure difference, the first gearbox 3 of balance, the pressure in the second gearbox 4, reduce in the second gearbox 4 to the pressure of seal and
Destroy, avoid oil leakage phenomenon.
Preferably, first conduit 1, one end of the second conduit 2 are separately positioned on the top of first gearbox 3,
First conduit 1, the other end of the second conduit 2 are separately positioned on the both sides of second gearbox 4.
Lubricating oil is usually located at the bottom of the first gearbox 3, by the way that one end of the first conduit 1, the second conduit 2 is set respectively
Put on the top of first gearbox 3, first is back to when the extraction lubricating oil out of first gearbox 3, or by lubricating oil
When in gearbox 3, lubricating oil can be made to flow through the parts such as gear and bearing in the first gearbox 3, the first gearbox 3 is carried out
Preferably lubrication.
Preferably, first gearbox 3 specifically includes the transition gear axle 301 being arranged in the first gearbox 3, transition
The one end of gear shaft 301 is fixedly connected with bevel gear 302, and the bevel gear 302 is meshed with second gearbox 4；The mistake
The other end for crossing gear shaft 301 engages respectively with upper fluted disc 303, tooth sector, and the tooth sector engages with lower tooth disk 304,
The upper fluted disc 303, lower tooth disk 304 are fixedly connected with main shaft 5.
Each part in the inside of first gearbox 3 can provide the modes such as bearing, gear and fix or engage, to realize speed change
Function.In the utility model, the both ends of transition gear axle 301 are individually fixed in the inner ring of bearing, and the outer ring of bearing is solid respectively
It is scheduled on the first gearbox 3.Gear in transition gear axle 301 engages respectively with upper fluted disc 303, tooth sector, the steering
Gear engages with lower tooth disk 304.Then when transition gear axle 301 rotates, upper fluted disc 303, lower tooth disk 304 rotate simultaneously.
Preferably, the junction of first conduit 1 and first gearbox 3, second conduit 2 and described first
The junction of gearbox 3 is separately positioned on the casing of the first gearbox 3 above the upper fluted disc 303.
Preferably, the casing of first gearbox 3 includes upper box and lower box, the upper box and the lower box
Dismountable connection, junction, second conduit 2 and the described first change of first conduit 1 and first gearbox 3
The junction of fast case 3 is separately positioned on the upper box of shown first gearbox 3.
First conduit 1, one end of the second conduit 2 are separately positioned on the top of first gearbox 3, can be arranged on institute
On the casing of the first gearbox 3 for stating the top of fluted disc 303, it can also be arranged on the upper box of shown first gearbox 3.
Preferably, second gearbox 4 specifically includes the wheel for inputting 401 being connected with power source, the wheel for inputting 401 with
Input gear axle 402 is fixedly connected, and the input gear axle 402 engages with output gear shaft 403, the output gear shaft 403
On be fixedly connected with input bevel gear 404, the input bevel gear 404 engages with the bevel gear 302 of the first gearbox 3.
In the utility model, each part in the inside of the second gearbox 4 can provide the modes such as bearing, gear and fix or nibble
Close, to realize the function of speed change.In the utility model, wheel for inputting 401 passes through one end of the modes such as screw thread and input gear axle 402
It is fixedly connected, wheel for inputting 401 is fixed on the inner ring of bearing, and bearing outer ring is fixed on the second gearbox 4.Input gear axle 402
The other end be also securable to the inner ring of bearing, bearing outer ring is fixed on the second gearbox 4.The gear of input gear axle 402
It is meshed with the gear on output gear shaft 403, the both ends of output gear shaft 403 are individually fixed in the inner ring of bearing, bearing
Outer ring is individually fixed on the second gearbox 4, and output gear shaft 403 is fixedly connected with input bevel gear 404, inputs umbrella tooth
Wheel 404 engages with the bevel gear 302 of the first gearbox 3.
When wheel for inputting 401 rotates, input gear axle 402 is driven to rotate, input gear axle 402 drives output gear shaft
403 rotate, output gear shaft 403 drive be secured to connection input bevel gear 404 rotate, input bevel gear 404 drive with
It engages the bevel gear 302 of the first gearbox 3 and rotated, and the rotation of bevel gear 302 drives transition gear axle 301 to rotate, and then band
Dynamic upper fluted disc 303 rotates with tooth sector, so as to drive lower tooth disk 304 to rotate.
Preferably, the junction of first conduit 1 and second gearbox 4 is arranged on the input gear axle 402
With on the side box body of the second gearbox 4 one of the engagement place of output gear shaft 403, second conduit 2 and described second
The junction of gearbox 4 is arranged on second speed change of the input gear axle 402 and the engagement place of output gear shaft 403
On 4 another side box body of case.
Second gearbox 4 is provided with input gear axle 402, output gear shaft 403, input gear axle 402 and output gear shaft
403 engagements.When input gear axle 402 rotates while rotating clockwise (such as input gear axle 402), output gear shaft is driven
403 rotate, and in gear engagement place, input gear axle 402 rotates clockwise, and output gear shaft 403 rotates counterclockwise, in engaging tooth
The right side of wheel group, space are squeezed, and pressure increase, form the lubricating oil oil-out of the second gearbox 4, lubricating oil is from second
Gearbox 4 is exited into the first gearbox 3 through the second conduit 2；In the left side of meshing gear group, space increase, vacuum is formed,
Pressure diminishes, and forms the lubricating oil oil inlet of the second gearbox 4, lubricating oil is sucked out out of first gearbox 3, through first
Conduit 1 is exited into lubricating oil, so as to form the closed circulation system of lubricating oil.
The junction of first conduit 1 and the second gearbox 4 is arranged on into input gear axle 402 to nibble with output gear shaft 403
On the side box body of the second gearbox 4 one at conjunction, the junction of the second conduit 2 and the second gearbox 4 is arranged on input gear axle 402
With on 4 another side box body of the second gearbox of the engagement place of output gear shaft 403, utilizing input gear axle 402 and output gear shaft
The 403 gear pumping actions formed, are circulated so that lubricating fluid preferably flows through the every nook and cranny of gearbox, makes to lubricating oil
It is more abundant to obtain transmission internal component lubrication；Pressure in gearbox can also be balanced simultaneously, reduce that pressure is unbalanced or office
The damage of seal or casing caused by portion's hypertonia, avoids gearbox oil leak.
Preferably, first gearbox 3 is fixedly connected with second gearbox 4.
First gearbox 3 can be fixedly connected with the second gearbox 4 by bolt or other modes, one entirety of formation
Gearbox.
A kind of gearbox, including above-mentioned speed changing box lubricating system.
A kind of helicopter, including above-mentioned gearbox.
The utility model also provides gearbox, the helicopter using above-mentioned lubricating system.
Existing transmission internal component lubrication is not in place, or the more scabrous defect of Leakage, the utility model be present
By setting the first conduit 1, the second conduit 2 on the top of the first gearbox 3 and the both sides of the second gearbox 4, pass through the second gearbox
The gear pump that input gear axle 402, output gear shaft 403 are formed in 4, is circulated to lubricating oil in two gearboxes so that
Lubrication in whole gearbox is more abundant.The first conduit 1, the second conduit 2 of the utility model setting simultaneously, can balance change
Fast case internal pressure, mitigate the pressure to sealing component of gear casing and seam crossing, reduce the risk of gearbox oil leak.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of speed changing box lubricating system, it is characterised in that including the first conduit (1), the second conduit (2), first conduit
(1), one end of the second conduit (2) is separately positioned on the first gearbox (3) being connected with main shaft (5), first conduit
(1), the other end of the second conduit (2) is separately positioned on the second gearbox (4) being connected with power source, first gearbox
(3) engaged with second gearbox (4) by gear.
2. system according to claim 1, it is characterised in that first conduit (1), one end point of the second conduit (2)
The top of first gearbox (3) is not arranged on, and first conduit (1), the other end of the second conduit (2) are separately positioned on
The both sides of second gearbox (4).
3. system according to claim 1, it is characterised in that first gearbox (3), which specifically includes, is arranged on first
Transition gear axle (301) in gearbox (3), transition gear axle (301) one end are fixedly connected with bevel gear (302), the umbrella
Gear (302) is meshed with second gearbox (4)；The other end and upper fluted disc (303) of the transition gear axle (301),
Tooth sector engages respectively, and the tooth sector engages with lower tooth disk (304), the upper fluted disc (303), lower tooth disk (304) with
Main shaft (5) is fixedly connected.
4. system according to claim 3, it is characterised in that first conduit (1) and first gearbox (3)
Junction, second conduit (2) and the junction of first gearbox (3) are separately positioned on positioned at the upper fluted disc
(303) on the first gearbox (3) casing above.
5. system according to claim 4, it is characterised in that the casing of first gearbox (3) include upper box and
Lower box, the upper box are removably connected with the lower box, first conduit (1) and first gearbox (3)
Junction, the junction of second conduit (2) and first gearbox (3) be separately positioned on shown in the first gearbox
(3) on upper box.
6. system according to claim 1, it is characterised in that second gearbox (4) specifically includes and power source phase
Wheel for inputting (401) even, the wheel for inputting (401) are fixedly connected with input gear axle (402), the input gear axle (402)
Engaged with output gear shaft (403), input bevel gear (404), the input umbrella are fixedly connected with the output gear shaft (403)
Gear (404) engages with the bevel gear (302) of the first gearbox (3).
7. system according to claim 6, it is characterised in that first conduit (1) and second gearbox (4)
Junction is arranged on second gearbox of the input gear axle (402) and the output gear shaft (403) engagement place
On (4) one side box bodies, the junction of second conduit (2) and second gearbox (4) is arranged on the input gear axle
(402) and on another side box body of second gearbox (4) of the output gear shaft (403) engagement place.
8. according to the system any one of claim 1-7, it is characterised in that first gearbox (3) and described the
Two gearboxes (4) are fixedly connected.
9. a kind of gearbox, it is characterised in that including the speed changing box lubricating system any one of claim 1-8.
10. a kind of helicopter, it is characterised in that including the gearbox described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225490.0U CN207161694U (en) | 2017-09-22 | 2017-09-22 | A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225490.0U CN207161694U (en) | 2017-09-22 | 2017-09-22 | A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161694U true CN207161694U (en) | 2018-03-30 |
Family
ID=61723672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721225490.0U Expired - Fee Related CN207161694U (en) | 2017-09-22 | 2017-09-22 | A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477173A (en) * | 2017-09-22 | 2017-12-15 | 湖南省库塔科技有限公司 | A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system |
-
2017
- 2017-09-22 CN CN201721225490.0U patent/CN207161694U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477173A (en) * | 2017-09-22 | 2017-12-15 | 湖南省库塔科技有限公司 | A kind of speed changing box lubricating system and gearbox, the helicopter using the lubricating system |
| CN107477173B (en) * | 2017-09-22 | 2024-04-12 | 重庆市巫山城市建设(集团)有限公司 | Gearbox lubricating system and gearbox and helicopter using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: 410000 room 52, door 5, building 30, No. 114, xinkaipu Road, Tianxin District, Changsha City, Hunan Province Patentee after: Li Jun Address before: 410000 Room 305, office building, No. 139, Zhongyi Second Road, economic development zone, Tianxin District, Changsha City, Hunan Province Patentee before: HUNAN KUTA TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 |